# Ponder This

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## July 2017 - Challenge

Ponder This Challenge:

This month's challenge is based on an idea from Omid Motahed (thanks!).

Find a way to assign a unique digit to each letter such that the 863,172nd digit after the decimal point of sin(PONDER) and of sin(THIS) are not zeros, but more than a fifth of the first million digits of sin(PONDER)*sin(THIS) are zeros.

The parameters are in degrees, and we count the digits from 1, so for example, sin(100) = 0.9848077530122... so the fifth digit after the decimal point of sin(100) is zero.

We will post the names of those who submit a correct, original solution! If you don't want your name posted then please include such a statement in your submission!

We invite visitors to our website to submit an elegant solution. Send your submission to the ponder@il.ibm.com.

If you have any problems you think we might enjoy, please send them in. All replies should be sent to: ponder@il.ibm.com

Challenge: 28/06/2017 @ 12:00 PM EST
Solution: 02/08/2017 @ 12:00 PM EST
List Updated: 07/08/2017 @ 12:00 PM EST

Oleg Vlasii (28/06/17 03:21 PM IDT)
Todd Will (28/06/17 04:05 PM IDT)
Robert Gerbicz (28/06/17 04:13 PM IDT)
Arthur Vause (28/06/17 09:33 PM IDT)
Uoti Urpala (28/06/17 10:02 PM IDT)
Tim Lewis (28/06/17 11:53 PM IDT)
Bert Dobbelaere (29/06/17 12:38 AM IDT)
Jesse Rearick (29/06/17 02:23 AM IDT)
YanWu-He (29/06/17 06:56 AM IDT)
Steven Langerwerf (29/06/17 08:38 IDT)
Alper Halbutogullari (29/06/17 09:08 AM IDT)
Rickard Björklund (29/06/17 10:10 AM IDT)
Dan Dima (29/06/17 04:41 PM IDT)
Alexandr Kozlinskiy (29/06/17 07:59 PM IDT)
Alex Fleischer (29/06/17 08:18 PM IDT)
Stéphane Higueret (29/06/17 08:19 PM IDT)
Sergey Redyuk & Erik Lagerstedt (30/06/17 10:50 AM IDT)
George Barnett (30/06/17 03:29 PM IDT)
Daniëlle van den Berg (30/06/17 05:43 PM IDT)
Teake Nutma (30/06/17 09:21 PM IDT)
Luca Pintori (30/06/17 09:41 PM IDT)
Rogerio Ponce da Silva (01/07/17 03:00 AM IDT)
Tyler Mullen (01/07/17 03:09 AM IDT)
Serge Batalov (01/07/17 06:36 AM IDT)
Dmitry Kim (01/07/17 01:48 PM IDT)
Andreas Stiller (01/07/17 05:06 PM IDT)
Joseph DeVincentis (01/07/17 07:13 PM IDT)
Hugo Pfoertner (01/07/17 10:42 PM IDT)
David Grabner & Nikolay Gromov (01/07/17 11:20 PM IDT)
Reiner Martin (02/07/17 01:27 AM IDT)
Wolfgang Kais (02/07/17 03:21 AM IDT)
Gary M. Gerken (02/07/17 08:21 AM IDT)
Vladimir M. Milovanović (02/07/17 03:15 PM IDT)
Aviv Nisgav (03/07/17 03:49 PM IDT)
Amos Guler (03/07/17 10:50 PM IDT)
Shirish Chinchalkar (03/07/17 10:51 PM IDT)
Kurt Foster (04/07/17 04:10 PM IDT)
Armin Krauß (04/07/17 07:41 PM IDT)
David Greer (05/07/17 01:56 AM IDT)
Harald Bögeholz (06/07/17 04:15 AM IDT)
Chuck Carroll (06/07/17 01:32 PM IDT)
Andreas Knüpfer (06/07/17 07:09 PM IDT)
Arthur Rubin (07/07/17 02:27 AM IDT)
Dawsen Hwang (08/07/17 05:43 AM IDT)
Serge Thill (10/07/17 02:08 PM IDT)
Stephen Lesko (12/07/17 12:44 AM IDT)
Dieter Beckerle (12/07/17 02:33 PM IDT)
Muralidhar Seshadri (12/07/17 07:04 PM IDT)
Motty Porat (15/07/17 11:31 PM IDT)
Erik Wünstel (16/07/17 06:04 PM IDT)
Jean Buff (20/07/17 07:41 PM IDT)
Vladimir Volevich (21/07/17 03:44 PM IDT)
Michael J. Swart (21/07/17 11:42 PM IDT)
Shouky Dan & Tamir Ganor (24/07/17 11:35 AM IDT)
Tilo Anschütz (25/07/17 02:54 PM IDT)
Peter Gerritson (27/07/17 04:20 AM IDT)
Leonid Kalmankin (27/07/17 11:03 PM IDT)
Greg Janée (28/07/17 08:37 AM IDT)
Liubing Yu (29/07/17 11:34 PM IDT)
Eden Saig (30/07/17 12:50 AM IDT)
Kang Jin Cho (31/07/17 10:01 PM IDT)
Oscar Volpatti (01/08/17 05:37 AM IDT)
Peter Huggins (02/08/17 07:06 PM IDT)